Experimental verification of drill string vibration suppression using an adaptive self-tuning controller

Fesmi Abdul Majeed, Hamad Karki, Mansour Karkoub, Youssef Lotfy Abdel Magid

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Drill bit whirl is a common phenomenon in rotary drilling rigs. It causes severe drill collar damage and borehole enlargement, leading to an irrevocable decrease in drilling efficiency. The majority of the research in this field concentrates on designing new drill bits or placing shock absorbers near the bottom hole assembly to minimize the damage caused by drill bit whirling. However, practically, vibrations in rotary drilling are minimized by tuning the upper rotary table speed or varying the weight on drill bit. This work explores the design and implementation of an adaptive controller to minimize vibrations of drill bits, particularly bit whirl. The developed controller achieves the vibration mitigation by varying the upper rotary speed. Moreover, the developed control law takes into account the vibrational frequencies and critical operating speeds of the drill string, thus also being capable of avoiding resonant vibrations. Experimental results are provided to prove the vibration mitigation capability of the developed controller.

Original languageEnglish
Pages (from-to)20-26
Number of pages7
JournalInternational Journal of Acoustics and Vibrations
Volume18
Issue number1
Publication statusPublished - Mar 2013

Fingerprint

drill bits
Drill strings
controllers
strings
Tuning
tuning
retarding
vibration
Controllers
drilling
shock absorbers
Drilling
damage
Drill collars
resonant vibration
Bottom-hole assembly
Shock absorbers
Drilling rigs
boreholes
Vibrational spectra

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Mechanical Engineering

Cite this

Experimental verification of drill string vibration suppression using an adaptive self-tuning controller. / Majeed, Fesmi Abdul; Karki, Hamad; Karkoub, Mansour; Magid, Youssef Lotfy Abdel.

In: International Journal of Acoustics and Vibrations, Vol. 18, No. 1, 03.2013, p. 20-26.

Research output: Contribution to journalArticle

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